Burner nozzle

Abstract

A burner comprises a body, a nozzle, and at least one attachment element for removably attaching the nozzle to the body. The body defines an oxidant inlet, a feedstock inlet, a body outlet, and one or more passages for conveying the oxidant from the oxidant inlet to the body outlet and for conveying the gasification feedstock from the feedstock inlet to the body outlet. The nozzle defines a nozzle inlet and a nozzle outlet, wherein the nozzle inlet is configured to receive the oxidant and the gasification feedstock from the body outlet and the nozzle outlet is configured to discharge the oxidant and the gasification feedstock into the reaction chamber. The at least one attachment element removably attaches the nozzle to the body such that the nozzle inlet is in fluid flow communication with the body outlet when the nozzle is attached to the body.

1. A burner for conveying an oxidant and an uncombusted gasification feedstock to a gasification reactor, said burner comprising:
 a body defining an oxidant inlet, an uncombusted gasification feedstock inlet, a body outlet, and one or more passages for conveying said oxidant from said oxidant inlet to said body outlet and for conveying said uncombusted gasification feedstock from said uncombusted gasification feedstock inlet to said body outlet, said body lacking an igniter for igniting the uncombusted gasification feedstock within the body; 
 a nozzle defining a nozzle inlet and a nozzle outlet,
 wherein said nozzle inlet is configured to receive said oxidant and said uncombusted gasification feedstock from said body outlet and said nozzle outlet is configured to discharge said oxidant and said uncombusted gasification feedstock into said gasification reactor; 
 
 a first flange extending radially outwardly from said body and a second flange extending radially outwardly from said nozzle, and at least one attachment element for removably securing said first flange and said second flange to one another such that said nozzle inlet is in fluid flow communication with said body outlet when said nozzle is attached to said body; 
 a first o-ring and a second o-ring for providing a substantially airtight junction between the first flange and the second flange when said flanges are removably secured to one another;
 wherein said airtight junction is suitable for use at the pressures and temperatures typically associated with the gasification of a carbonaceous feedstock without substantial leakage of the junction. 
 
 
     
     
       2. The burner as set forth in  claim 1 , wherein one of said first and second flanges includes one or more internally threaded bolt-receiving recesses, wherein the other of said first and second flanges includes one or more through-holes aligned with said internally threaded recesses. 
     
     
       3. The burner as set forth in  claim 2 , wherein said at least one attachment element includes at least one bolt extending through one of said through-holes and threadedly engaging one of said bolt-receiving recesses. 
     
     
       4. The burner as set forth in  claim 3 , further comprising a protective element for shielding a head of said at least one bolt. 
     
     
       5. A gasification burner comprising:
 a body including —
 a body inlet, 
 a body outlet, 
 a body passage interconnecting said body inlet and said body outlet,
 wherein said body passage does not comprise a combustion chamber, 
 
 a body flange located proximate said body outlet, and 
 a body coolant conduit; and 
 
 a nozzle including —
 a nozzle inlet, 
 a nozzle outlet, 
 a nozzle passage interconnecting said nozzle inlet and said nozzle outlet,
 wherein said nozzle passage does not comprise a combustion chamber, 
 
 a generally frustoconically shaped cooling jacket comprising at least one nozzle coolant conduit, wherein said cooling jacket at least partially surrounds at least a portion of said nozzle passage, and 
 a nozzle flange extending radially outwardly from said cooling jacket, 
 at least one bolt for removably attaching said nozzle flange to said body flange,
 wherein said body outlet is in fluid communication with said nozzle inlet and said body coolant conduit is in fluid communication with said nozzle coolant conduit when said nozzle is attached to said body, 
 
 
 a seal comprising a first o-ring and a second o-ring for providing a substantially airtight junction between the first flange and the second flange when said flanges are removably secured to one another,
 wherein said airtight junction is suitable for use at the pressures and temperatures typically associated with the gasification of a carbonaceous feedstock without substantial leakage of the junction. 
 
 
     
     
       6. The burner as set forth in  claim 5 , wherein the inner diameter of said nozzle inlet is in the range of from about four inches to about fourteen inches, wherein the inner diameter of said nozzle outlet is in the range of from about two inches to about twelve inches. 
     
     
       7. The burner as set forth in  claim 5 , further comprising a castable refractory material applied to an outer surface of said cooling jacket. 
     
     
       8. The burner as set forth in  claim 5 , wherein said nozzle further comprises a wear resistant material circumscribing at least a portion of said nozzle passage and defining an inner surface of at least a portion of said nozzle passage. 
     
     
       9. The burner as set forth in  claim 8 , wherein said wear resistant material comprises tungsten carbide and/or silicone carbide. 
     
     
       10. The burner as set forth in  claim 8 , wherein said nozzle further comprises a thermally conductive material circumscribing at least a portion of said wear resistant material. 
     
     
       11. The burner as set forth in  claim 10 , further comprising a first insert stop proximate said nozzle outlet and a second insert stop proximate said body outlet, wherein said first insert and said second insert stop secure in place said wear resistant material and said thermally conductive material. 
     
     
       12. The burner as set forth in  claim 10 , wherein said nozzle coolant conduit circumscribes the wear resistant material and the thermally conductive material. 
     
     
       13. The burner as set forth in  claim 5 , further comprising a refractory material circumscribing at least a portion of said nozzle coolant conduit.